A trinuclear copper(II) complex with 2,5-pyridine-dicarboxylato bridges - [Cu3(2,5-pydc)2(Me5dien)2(H2O)2(BF4)2] • H2O: Synthesis, crystal structure and magnetic properties

被引:13
|
作者
Ene, Cristian D. [1 ]
Maxim, Catalin [1 ]
Tuna, Floriana [2 ]
Andruh, Marius [1 ]
机构
[1] Univ Bucharest, Fac Chem, Inorgan Chem Lab, Bucharest 020464, Romania
[2] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England
关键词
Copper; Trinuclear complexes; 2,5-Pyridine-dicarboxylato bridges; Crystal structure; Magnetic properties; COORDINATION POLYMERS; LIGANDS;
D O I
10.1016/j.ica.2008.08.034
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
A trinuclear copper(II) complex, [Cu-3(2,5-pydc)(2)(Me(5)dien)(2)(BF4)(2)(H2O)(2)] center dot H2O 1, has been constructed from 2,5-pyridine-dicarboxylato bridges (2,5-pydc(2) ) and N,N,N',N '',N ''-pentamethyl-diethylenetriamine (Me(5)dien) acting as a blocking ligand. The copper ions, within the centrosymmetric trinuclear cations, are connected by two 2,5-pydc(2) bridges, with an intramolecular Cu center dot center dot center dot Cu separation of 8.432 angstrom. The central copper ion exhibits an elongated octahedral geometry, with semicoordinated (BF4-) ions, while the terminal ones are pentacoordinated (distorted square-pyramidal geometry). The cryomagnetic investigation of 1 reveals an antiferromagnetic coupling of the copper(II) ions (J = -5.9 cm (1), H = -JS(Cu1)S(Cu2) - JS(Cu2)S(Cu1a)). (C) 2008 Elsevier B.V. All rights reserved.
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页码:1660 / 1664
页数:5
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